Pipe construction



Nov. 14, 1933. D. H. HAYDEN PIPE CONSTRUCTION Filed Aug. 13, 1932 Patented Nov. 14, 1933 n lUNITED STATES PATE-Nr OFFICE'.v

A o PIPE CONSTRUCTION David Homer Hayden,` New York, N. Y. Y vApplication August v13,` 1932. Serial No. 628,690.

e'claims. (o1. 131-12) My invention relates to pipes particularly in tended for smoking t-obacco.

One object isv to provide a pipe which will remove from the smoke most of the surplus mois-k 55 ture and other condensable products of combustion. I Another object is to provide a construction which will collect the solid 4residue Without clogging -up the smoke passage;

'10. Another object is` to provide -a construction which will to a large extent remove the nicotine,y

coal tar and similar products of the combustion. 'Another object `is to vprovide ja construction which will smoke cool.

" Another object is 'to` provide a lconstruction which'r will-produce a uniform flavor throughout the entire smoke. l o Another object is to-provide a construction which while it takes up the surplus moisture T when the pipe is first ligl'itedwillA add moisture toward the end of the smoke, thus vgiving an equalized sensation and-"avor during the entire period of smoking. v

Y Another object is to provide a construction T having an absorbent member which can be readily removed and replaced.

Another object is to provide a construction of the character described which is-light in weight and which can be made in attractive' forms.

Another object is to provide a pipe which can be successfully made very light Aand yet uniform and durable.

A special object is to provide a pipe, the outer and inner parts of'which can be made of molded l composition such as thermoplastic phenolic con-` densation" products. l

\ In carrying Yout the invention I preferably form'the pipein three parts, namely, (1) an outer body portion to which the stem is attached v40 either-integrally orotherwise, (2) an inner `bowl for receiving the tobacco and forming' the com-f bustion chamber, and (3) an intermediate absorbent sleeve Aorcup-like body which'ts Ainto the outer main body and itself receivesthe com- 45 bustion receptacle or lining.

The invention may be .embodied in a number of different modiiications, some of 'which are shown andl Ydescribed hereinafter.

Fig'. 1 isa cross sectional view of one form vof t construction.

'55 Fig. 4 is a sectional view showing an-addititunai` protective cupk which may be employed in somev cases. f f

Fig. 5 is a sectional View of another modification.

The main body 10 may be formed of any suit` 60 able material such as briarwood or molded com-V position in any suitable design, size or shape.

The receptacle 11, which is'intended to hold the tobacco, may be formed of suitable material such as molded reclay, bakelite or other molded composition.

The intermediate body'12 is preferably vformed of akhig'hly absorbent material such as balsawood. Exteriorly vthe dimensionis such thatit will fit snugly within a recess in the main body, and interiorly it is made to receive the bowl 11 which `fits snugly at the top but leaves a substantial chamber 13 in'theibottom and around the sides of the bowl. Y l

The tobacco bowl 11 is provided with one or 'I5 more'outlets 14in or near the bottom which open into the chamber 13. The exterior of the intermediatebody is provided with a groove 15 which is "continuous from the upper portion to the f lower portion and may be out helically with its upper end' communicating through a passage 16 with the upper part of the chamber 13 and with its lower partcommunicating with the entra-nce 17 tothe stem, thus forming a smoke passage from the combustion chamber of the bowl 11 so 8.5 that the smoke passes through the outlet 14 into the`chamber13, rises around the sides of thecomfbustion' bowl, passesthrough the opening v16 into the groove 15, thence traveling round and round the absorbent body 12 and out through the exit 90v l'ltothestem...A f I When'material such as balsawood is employed it is'desirable to protect this material from sparks and direct flame through the opening 14, for instance, bymeans of an inoombustible disc 18.

This disc may be of any suitablere-resisting material such as reclay or a metal' in the form of a tack which can be readily inserted into the bottom of the absorbent member 12. I

` In order that the groove 15 shall prove effective 100 as a continuous channel it is, ofcourse, desirable thatthe outer wall of the body 12 iit snugly in the main body at the top and bottom and between the convolutions of the groove.

`Forthis reason the intermediate body 12 is 105 made large enough to fit snugly Within the cavity in the'body 10 and as an additional precaution the upper edgev 19 and the lower edge 20 maybe originally out somewhat larger in diameter than the corresponding interior diameters of the body collectionof' ash and condensation fie cle'

' morelimited: in its application'v than .the

so that when the intermediate member 12 is inserted it is forced into place and the edges 19 and 20 are compressed by reason of the resilient character of the material of which it is made. The compression at the top also tightly grips the exterior of the combustion member 11 so as to hold it tightly in place when the parts are assembled. Tight joints are very desirable throughout the entire structureN in order to insure an eiiicient draught.l` The slightly cup-shaped disc 18. corresponds with the incombustible disc 18 of Fig. 1 and may be of similar material for protecting the balsawood against ignition.

Preferably the main body and the intermediate. body are so constructed as to facilitatev assembly and separation and for this purpose, the bottom,

of the main body is provided with an opening 21 and the intermediate body'12fis-provide'd with combustion chamber'into the chamberv 13 where some of"the-moisturey is'rstabsorbed. As the smolrezzp'asses.outwardly4 through the opening 15 intdthe helicalgrooveand around the intermediatelmemberilzmore offthe moisturetogether with othervolatile products:arev absorbedA in theexterior walls of the absorbent body 12. This body 12 alsoiacts'as'fa` thermal' insulator so that a-great deal' of theih'eat ofcombustion'is prevented from reaching. the bowl 10. vThe pipe therefore never t eetsfsorhot as to beuncomfortable to the hand.

Somethermal insulation isfalsoaforded by the airspace inithe upper partY of; the'chamber 13 around the sidesY ofthe combustion chamber. When the combustion chamber getsrhot it also serves rto .evaporate the Vmoisture from the inner wallof the'absorbent'memberlz' Vso that moisture isrestored to thesmoke as the operation goes on. The chamber 13Aalso provides a spaceforthe of the heavier volatile residues... g i .In` such a construction itispossible to burn up allsofsithe tobaccoin smoking in the usual way because-thereis 'no collection ofi moisture in the bottom of" the'- combustionV bowlv to interfere with f complete:- consumption;v Y

Duringtheentire period of combustion the temperature maintainedin chamber 13A is'suiiicient torpreventthe volatileugases` from condensing, thuslseparatingthe `gases from' the heavyresidues.

- In-the former construction shownin Fig. 3 the intermediate member 12 is providedwith circular' channels 15' connectedby vertical channels .i so-astoprovidefin'- effect a vcontinuous channel fromzt'op tozbottom although` not' mathematically ai helical channel; Infthis case the bottom22 ci the. absorbentl member is substantially the full diameter of the member instead of being reduced in1sizerasshown'inFigs. 1 and 2. The latter construction isV suitable for many designs but is type'of constructionishown in Figs. 1 and 2.

. Whenithe' intermediate body-is formed of inaterialr 'whichA is highly absorbent likefbalsawood. it is desirable to coator otherwise protect the upper andlower ends witha-waterproof composition or materialsuch as shell'ac so as to seal the ends.

Preferablyrthe b'ody`1'2`is turned up from balsawoodwith; the grain running'parall'el'to the axis ofthepipe bowl, thus aiording maximum mechanical strength` andv at the same time in' the exterior grooves exposing the most absorbent cellular structure of the wood.

In place of the member 18 for protecting the member 12 from combustion I may employ a metal cup 23 which is adapted to be inserted into the lower end of the cavity of the member 12 and is retained frictionally or by means of tangs 24 formed by punching holes in the member 23 and pressing the cut metal outwardly so that it will interloclrwth the absorbent body.

The form of construction shown in Fig. 5 is especially adapted to be made of molded composition in which the main body 25 extends only aipart of. the height of the bowl and the remainder ofthe exterior of the bowl is formed by a flange 26which isintegral with the combustion receptacle 27. In this case the absorbent sleeve 231s inserted inl the member 25 and compressed ,at the top by the combustion receptacle. A fireresistant member 30 is corrugated at 31 and formed with a Vhelical Vgroove'31 in its-exterior and iits snugly within the' absorbent sleeve 28:` Thecombustion chamber 27 has the usual exit 32 at the bottom and Vfitsl snuglyy against the upper end 33v of the grooved member 30, There is a passage 34 through the wall of the member 30 communicating with the groove- 31 and the lower 'end' of the ,groove- 31 communicates with the space 35 which is incommunicaton with the. exit 36 tothe stem. In thiscase'the ashchamber 37 is formed in the non-absorbent member 30.y Thisconstruction isparticularly adaptedto fabrication from molded materials which: can be made thin and therefore very small in size. This, ofv .course,gcan be made in any size and Yprovides a: maximum tobacco cavityl for -ar given size ofpipe.

Y Itshouldbeunderstood that the-long` channel around themember 12 mightrbe cut asa helical groove in the inner wall of the body 10, iniwhich case thel body 12 would-,be smooth on theexterior but still absorbent.

It is preferable, however, that thev groove should be; cut intheV absorbent member because in this way,I a greater absorbent area isprovided;

Another advantage is that in the construction shown in Fig. 1 ther interior of the mainbody is'perfectly smooth and can therefore-be readily cleaned,` it` beingA understood, of course, that the intermediate member 12 when saturatedfwill-be thrownaway. It will bel understood,r of course; that the inner tobacco compartment may also-be renewed from time to-time. A .While the intermediate absorbent member has been described as preferably ofubalsawood, ce1'.-` tain advantages of the invention may` accrue fromthe use of other materials such, for instance, as corn cob, and I therefore wish it understood that the claims areto'be construed broadly within their respective terms althoughv balsawoodN has great advantages specifically for many purposes.

I claim:

1.A pipe havingan. outer-bowl with Va passage through the bottom anda stem at one sidean absorbent body inserted.; into the bowl from the top: and removable by pressurethrough the bottom passage, a combustion receptacle secured in the absorbent body and'having'an outletat the bottom, said absorbent body forming an ash and smoke receiving chamber beneath and around the receptacle; the bowlr and bodyI having between them a circuitous groove connected at oneV 'end to said chamber andi'at its other'end. with said stem.

2;. AVv pipe member formed of'` absorbent balsawood with compressible flanges at the top and bottom to fit in a pipe bowl and means for protecting the member from being ignited by means in the pipe bowl.

3. A pipe member formed of highly absorbent material having external encircling grooves and compressible flanges at the top and bottom.

l4. A pipe member formed of absorbent and resilient material having an external encircling groove and a compressible ange at the bottom.

5. A pipe having an outer bowl with an open mouth at the top and a'passage through the bottom and a stem at one side, an absorbent body inserted into the open mouth of the bowl and removable by pressure through the bottom passage, and a combustion receptacle secured in the absorbent body and having an outlet at the bottom, said absorbent body having an ash and smoke receiving chamber with a nre-proof insert beneath the receptacle, the bowl and body having between them a groove connected at one end to said chamber and at its other end with said stem.

6. A pipe construction comprising amain body member with stem connection, a combustion receptacle, a flanged member connecting the combustion receptacle and pipe body, a casing of fire-resisting material having an ash receiving chamber and a removable resilient and absorbent body of balsawood which rits snugly in the main body and also engages the walls of said casing so as to form a smoke passage.

7. A pipe construction comprising a bowl hav ingfa stem, a combustion receptacle having an outer downwardly depending body flange meeting the upper edge of the bowl, a. resilient highly absorbent sleeve of balsawood clamped between the bowl and the upper part ofthe combustion receptacle and a reproof lining interposed between said sleeve and said receptacle and hav-V ing a circuitous groove formed in its outer wall forming in connection wtih the sleeve an absorbent channel, said receptacle having an opening in its lower part communicating with said lining.

8. A pipe having a bowl member open at the I Y body,v an inner combustion receptacle, an intermediate highly absorbent body of balsawood, and reproof means for protecting the balsawood against ignition from above the bottom of the combustion receptacle, said reproof means being situated between the inner combustion receptacle and the balsawood.

. DAVID 'HOMER HAYDEN. 

